Abstract
Lactic acid bacteria (LAB) resistant to erythromycin were isolated from different food samples on selective media. The isolates were identified as Enterococcus durans, Enterococcus faecium, Enterococcus lactis, Enterococcus casseliflavus, Lactobacillus salivarius, Lactobacillus reuteri, Lactobacillus plantarum, Lactobacillus fermentum, Pediococcus pentosaceus and Leuconostoc mesenteroides. Of the total 60 isolates, 88 % harbored the ermB gene. The efflux gene msrA was identified in E. faecium, E. durans, E. lactis, E. casseliflavus, P. pentosaceus and L. fermentum. Further analysis of the msrA gene by sequencing suggested its homology to msrC. Resistance to tetracycline due to the genes tetM, tetW, tetO, tetK and tetL, alone or in combination, were identified in Lactobacillus species. The tetracycline efflux genes tetK and tetL occurred in P. pentosaceus and Enterococcus species. Since it appeared that LAB had acquired these genes, fermented foods may be a source of antibiotic resistance.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Anti-Bacterial Agents / pharmacology*
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Cluster Analysis
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DNA, Bacterial / chemistry
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DNA, Bacterial / genetics
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics
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Drug Resistance, Bacterial*
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Erythromycin / pharmacology*
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Food Microbiology*
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Genes, Bacterial
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India
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Lactobacillales / drug effects*
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Lactobacillales / isolation & purification*
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Microbial Sensitivity Tests
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Molecular Sequence Data
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Phylogeny
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RNA, Ribosomal, 16S / genetics
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Sequence Analysis, DNA
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Tetracycline / pharmacology*
Substances
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Anti-Bacterial Agents
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DNA, Bacterial
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DNA, Ribosomal
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RNA, Ribosomal, 16S
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Erythromycin
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Tetracycline
Associated data
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GENBANK/HQ615663
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GENBANK/HQ615664
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GENBANK/HQ615665
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GENBANK/HQ615666
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GENBANK/HQ615667
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GENBANK/HQ615668
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GENBANK/HQ615669
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GENBANK/HQ615670
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GENBANK/HQ615671
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GENBANK/HQ615672
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GENBANK/HQ615673
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GENBANK/HQ615674
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GENBANK/HQ615675
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GENBANK/HQ615676
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GENBANK/HQ615677
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GENBANK/HQ615678
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GENBANK/HQ615679
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GENBANK/HQ615680
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GENBANK/HQ615683
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GENBANK/HQ615684
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GENBANK/HQ615685
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GENBANK/HQ615686
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GENBANK/HQ651916
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GENBANK/HQ651917
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GENBANK/HQ651918
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GENBANK/HQ651919
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GENBANK/HQ651923
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GENBANK/HQ651925
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GENBANK/HQ651926
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GENBANK/HQ651927